diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index a128512..b68a00e 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -54,6 +54,7 @@
 
 static const char *map_type__name[MAP__NR_TYPES] = {
 	[MAP__FUNCTION] = "Functions",
+	[MAP__VARIABLE] = "Variables",
 };
 
 static size_t __map_groups__fprintf_maps(struct map_groups *self,